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High temperature resistant propellant for oil and gas deep wells and preparation method thereof

A technology of high temperature resistance and propellant, applied in the direction of alkali metal composition, etc., can solve the problems of inability to use, and achieve the effect of good temperature resistance and excellent hydrolysis resistance

Inactive Publication Date: 2017-09-08
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potassium nitrate has a high solubility in water, 31.6 grams at 20°C and 85.5 grams at 50°C, and the higher the temperature, the greater the solubility, so it cannot be used in a high temperature (greater than 150°C) multi-water environment.

Method used

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  • High temperature resistant propellant for oil and gas deep wells and preparation method thereof
  • High temperature resistant propellant for oil and gas deep wells and preparation method thereof
  • High temperature resistant propellant for oil and gas deep wells and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] The preparation method of the above-mentioned high-temperature-resistant solid propellant for oil and gas deep wells, the method is carried out according to the following steps:

[0037] Step 1, according to the formula ratio, by weight percentage, the high temperature resistant epoxy resin is 10.00% to 20.90%, the bisphenol A epoxy resin is 0 to 16.58%, and the epoxy resin active diluent is 4.75 to 13.03%. The agent boron trifluoride-amine complex is 0.50%, the defoamer is 0.03%, add it into the mixing pot, and pre-mix for 10 minutes;

[0038] Step 2: In terms of weight percentage, 30.00% to 58.00% of potassium perchlorate and 2.00% to 30.00% of 1,1'-dihydroxy-5,5'-bitetrazolium dihydroxylamine salt are added to the system of step 1, After mixing for 50 minutes, add diaminodiphenyl sulfone at a rate of 6.57% to 8.14%, and stop mixing after mixing for 15 minutes to obtain a syrup;

[0039] Step 3: pour the slurry obtained in step 2 into a mold, put it into a 130°C oven...

Embodiment 1

[0042] The high-temperature-resistant solid propellant for oil and gas deep wells in this embodiment is composed of the following raw materials in terms of weight percentage: 30.00% of potassium perchlorate, 30.00% of 1,1'-dihydroxy-5,5'-bitetrazole dihydroxylamine salt %, 4,4'-diaminodiphenylmethane tetraglycidylamine type epoxy resin is 14.40%, epoxy resin E-51 is 5.47%, o-cresyl glycidyl ether is 13.03%, accelerator boron trifluoride - 0.50% of the amine complex, 0.03% of the silicone resin, and 6.57% of diaminodiphenylsulfone.

[0043] Performance Testing:

[0044]Detonation heat is determined by GJB770B-2005 method 701.2 detonation heat and combustion heat constant temperature method.

[0045] The specific volume is measured according to GJB770B-2005 method 702.1 specific volume pressure sensor method.

[0046] The test method for high temperature resistance is: Ф20mm×20mm powder column (1) 3°C / min rise to 200°C, keep warm for 48h; (2) Temperature control point: the the...

Embodiment 2

[0053] The high-temperature-resistant solid propellant for oil and gas deep wells of this embodiment is composed of the following raw materials in terms of weight percentage: 35.00% of potassium perchlorate, 25.00% of HATO, 10.00% of TGDDM, 16.58% of epoxy resin E-51, and Cresyl glycidyl ether is 4.75%, accelerator boron trifluoride-amine complex is 0.50%, silicone resin is 0.03%, and diaminodiphenylsulfone is 8.14%.

[0054] The performance test method of the high-temperature-resistant solid propellant for oil and gas deep wells in this embodiment is the same as that in Embodiment 1, and the performance test results are shown in Table 2.

[0055] Table 2 The performance test results of Example 2

[0056]

[0057] It can be concluded from Table 2 that the propellant has moderate heat of detonation (ie, energy), moderate specific volume, and high temperature resistance, water resistance and salt water resistance all meet the performance requirements. Suitable for oil and ga...

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Abstract

The invention provides a high-temperature-resistant propellant for an oil / gas deep well. The high-temperature-resistant propellant is prepared from the following raw materials by weight percent: 30 to 58 percent of potassium perchlorate, 2 to 30 percent of 1,1'-dihydroxyl-5,5'-bistetrazole dihydroxylamine salt, 10 to 20.90 percent of high-temperature-resistant epoxy resin, 0 to 16.58 percent of bisphenol A epoxy resin, 4.75 to 13.03 percent of epoxy resin active diluting agent, 0.5 percent of accelerant boron trifluoride-amine complex, 0.03 percent of a defoaming agent, 6.57 to 8.14 percent of diaminodiphenyl sulfone, and the sum of the weight percentage of the raw materials is 100 percent. The raw materials of the propellant are mixed after being pre-mixed, and then the mixed materials are formed by virtue of a mold to produce a finished product. After the solid propellant is immersed in clean water and 3.5% saline water for 24 to 48 hours, the weight loss of the solid propellant is less than 3 percent, and the volume variation is less than 2 percent; the temperature-resistant grade can reach 200 DEG C for 48 hours, the spontaneous combustion of the propellant can be avoided, and the high-temperature-resistant propellant can be used in a high-temperature watery environment.

Description

technical field [0001] The invention belongs to the field of oil and gas deep well heat-resistant fracturing bomb charges, and relates to a propellant. Background technique [0002] Deflagration fracturing using gunpowder charges has a history of nearly 40 years of development at home and abroad. Various fracturing bomb products or technologies such as steel shell type and shellless type have been widely used in oil fields, and have achieved good production increase. Note the effect. Deflagration fracturing technology uses specific propellant charges to burn at high speed in the oil-producing layer of oil and gas wells to generate high-temperature and high-pressure pulsed gas, fracturing the formation to form multiple radial fractures radially from the wellbore, and to remove oil and gas layer pollution and blockages , effectively reduce the formation skin factor, so as to achieve the purpose of increasing production of oil and gas wells. [0003] Since the downhole enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B29/02
Inventor 王国强李宏岩曹继平蔚红建党永战付小龙刘晓军张正中
Owner XIAN MODERN CHEM RES INST
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